Folding paper box



P. WALKER.

FOLDI NG PAPER BOX.

APPLICATION FILED AUG. 10, 1917.. RENEWED JUNE 15. I921- Patent ed Apr. 4, 1922.

3 SHEETS-SHEET 1.

P. WALKER.- FOLDING PAPER Box.

APPLICATION FILED AUG.I0,1917. 1,41 1,678.

RENEWED JUNE 15, 192i.

Patent'ed Apr. 4, 1922.

3 SHEETS-SHEET 2- P. WALKER.

FOLDING PAPER BOX- APPLICATION FILED AUG. I0, I917- RENEWED JUNE I5. 192].

lA-l 1,678. Patented Apr. 4, 1922.

3 SHEETSSHEET 3.

UNITED STATES PATENT OFFICE.

PAUL WALKER, OF-OHICAGO, IIJLINOIS, ASSIGN'OR TO CHICAGO CARTON COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FOLDING PAPER BOX.

Specification of Letters Patent.

Patented Apr. 4, 1922.

Application filed August 10, 1917, Serial No. 185,427. Renewed June 15, 1921. Serial No. 477,863.

To all whom it may concern:

Be it known that I, PAUL WALKER, a citizen of the United States and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Folding Paper Boxes, of which the following is a specification.

The invention relates .to folding paper boxes and seeks to provide improved means for connecting the side and end walls or panels thereof.

The invention consists in the features of improvement hereinafter set forth, illustrated in differentpreferred forms in the accompanying drawings and more particularly pointed out in the appended claims.

In the drawings, Figure l is a plan view of a blank for forming a folding box embodying the present improvements. Fig. 2 is a cross section of the box made ,from a blank shown in Fig. 1, with the cover portions in folded position. Fig. 3 is a similar view with the cover portions in display position. Fig. 4 is a detail section on the line 4-4 of Fig. 3. Fig. 5 is a blank for forming another style of box embodying certain features of the present invention. Fig. 6 is a perspective view of a box made from the blank shown in Fig. 5.

The form shown in Figs. 1, 2, 3 and 4: comprises a bottom panel 0,, side panels I) integrally hinged thereto along side scores Z and end panels 0 integrally hinged to the main panel a along end scores 2. The side panels 6 form the front and rear walls of the box and are provided at their ends with extensions or wings d integrally hinged thereto along scores 3.

These wings are of substantially the same height as the end panels 0 or are preferably very slightly narrower than the end panels and are arranged against the inner faces of the end panels when the box is set up. The end panels are provided with extensions or flaps f connected to the outer edgesthereof along the scores 4 and which are adapted to fold inwardly and overlap the wingsd.

To securely connect the parts and form stifl? end walls, the main panel a and preferably the scores 2 at its ends, are provided.

locking flaps are provided with two tongues 6. Preferably, the slits are straight and quite narrow, being mere cuts in the paper stock formed at the inner parts of the scores 2. The width of each locking flap and one of its tongues from the outer edge of the tongue to the score 4: is substantially equal to the height of the box or to the width of the end panel a; plus the thickness of the box material. Furthermore, the tongues are in line with the flaps and are substantially rigid therewith. That is to say, there are no scored portions between the tongues and the main body of the locking flap.

In setting up the box, the side panels or about the scores l and, as each flap is moved from the position shown in dotted lines in Fig. 4 to the position shown in full lines thereof, the tongues 6 snap into the slits 5 in the scores 2 so that the wings (Z of the side panels are snugly gripped between the end panels and the locking flaps. As the flap is swung about its hinged edge from the position shown in dotted lines in Fig. lto that shown in full lines, the rigid tongues on its edge will press down the edge portion of the box bottom a and engage andproject slightly into the narrow cuts or slits 5 which securely grip the tongues. The construction forms a very secure lock between the sides and ends of the box and also forms a very strong end wall construction.

The box shown is provided with a combined cover and display surface 6 which is integral with and hinged to the rear wall I) along the score 7. It is provided at its edges with wings or brackets g hinged thereto along the scores 8. These brackets are provided with triangular portions 9 cut out of the adjacent wings d and are connected thereto along scores 10. These triangular portions 9 are provided with tongues 11 which are arranged to engage slots 12 formed in the scores 4 at the upper edges of the end walls or panels a.

The front sidepanel b is provided with an integral display portion or panel h hinged thereto along a score 13 and provided with integral end wings 14 hinged thereto along scores 15. In the closed position of the box,

the brackets g are arranged agginst the inner faces of the ends of the x with the portions 9 thereof against the rear wall, as shown in Fig. 2. Also, in this position, the front display panel 11. preferably overlaps the display cover 0 and the wings 14 extend downwardly between the brackets g and the end walls of the box. When the box is set up for display, the panel h is folded over against the outer face of the front walls I) with the'wings 14 tucked into the folded ends. The tongues 11 on the triangular bracket portions 9 are engaged with the slots 12 and thus hold the combined cover and display surface 6 in an upwardly and rearwardly inclined position, as shown in Fig. 3.

The improved means for locking the. sides and ends may be applied to different types of boxes and to box lids. In the form shown in Figs. 5 and 6 the main panel a or the bottom of the box, the side and end panels I) and c and the connected parts are substantially similar to those already described except that the box is narrower and the locking flaps f are each provided with but a single tongue 6. The rounded form of this tongue facilitates the folding or setting up i of the ends.

In this form a cover is provided and comprises a main panel a hinged to the edge of the wall or side panel I) along a score 16. This main panel is slightly larger than the the main panel a of the box body and is pro vided with one side panel I) and two 'end 0' which are hinged thereto along panels side and end scores 1 and 2. Like the corresponding portions of the box body, the side panel I) is provided with wings (I hinged to its ends by the scored portions 3 and the end panels 0' are provided with locking flaps f hinged thereto by the scored portions 4 and having substantially rigid locking tongues 6 in alinement therewith. The wings cl of the cover are preferably slightly longer than the wings d of the box body and slits 5 and cooperating tongues 6 are preferably offset from central position toward the rear edge of the cover. The narts of the box body and cover are set up as already described, and the construction provides a folding box and hinged cover having overlapping sides and ends which can be readily set up and is of strong construction.

It is obvious that changes may be made in the details set forth without departure from the essentials of the invention as defined in the claims.

I claim as my invention 1. In a folding paper box, a main panel having a slit at its end, side and end panels hinged thereto, an inturned end wing hinged to said side panel and arranged against the inner face of said end panel, at least a portion of said wing having substantially the same height as said end panel, and an in. wardly folding locking fla hinged to said end panel and having a su stantially rigid tongue at its free end, said flap and tongue having a combined width substantially the same as the height of said end panel, said tongue being adapted to snap into said slit as said flap is swung into position about its ,hingededge, and said tongue, in operative position, being substantially perpendicular to said main panel, whereby said end wing is securely gripped between said end panel and said locking flap, substantially as described.

2. A folding box portion having a main panel, side and end panels integrally hinged thereto, there being a locking slot at the fold between said main and end panels, and an inwardly folding flap integrally hinged atone edge to said end panel and having a tongue at its opposite edge, said flap and tongue being substantially rigid and having a combined width substantially equal to the height of the box portion,-whereby, as said flap is swung to position above its hinged edge, said tongue is adapted to snap into said slot and extend therethrough substantially at right angles to said main panel,

said side panel having an inturned'end wing disposed between said end panel and said folding flap and adapted to engage the fold between the same.

PAUL WALKER. 

